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Table 2 Definitions of angular and linear measurements used in this study

From: Effectiveness of reverse twin block with lip pads-RME and face mask with RME in the early treatment of class III malocclusion

Measurement

Definition

Ba-T-Vert T

Angle between basion, tuberculumsella, and vertical T line

Ar-T-Vert T

Angle between articulare, tuberculumsella, and vertical T line

SNA

The angle between the anterior cranial base and NA plane

SNB

The angle between the anterior cranial base and NB plane

ANB

SNA minus SNB

WITS

Distance between points A and B projected as perpendicular lines along the functional occlusal plane

A-Vert T

Distance between point A and vertical T line

Ptm-Vert T

Distance between pterygomaxillary fissure and vertical T line

Co-A

Distance between condylion and vertical T line

Pr-Vert T

Distance between pronasale and vertical T line

B-Vert T

Distance between point B and vertical T line

Id-Vert T

Distance between infradentale and vertical T line

Co-Gn

Distance between condylion and gnathion

Co-Go

Distance between condylion and gonion

Go-Gn

Distance between gonion and gnathion

Co-Vert T

Distance between condylion and vertical T line

ML-SBL

Angle between mandibular line and stable basicranial line

NL-SBL

Angle between nasal line and stable basicranial line

NL-ML

Angle between nasal line and mandibular line

Ar-GO-Me

Angle between articulare, gonion, and menton

ANS-Me

Distance between anterior nasal line and menton

UI-SN

Distance between upper incisor and vertical T line

IMPA

Incisor mandibular plane angle

CondAx-Vert T

Angle between condylar axis and vertical T line

CondAx-SBL

Angle between condylar axis and stable basicranial line

CondAX-ML

Angle between condylar axis and mandibular line

Ar-Go-Vert T

Angle between articulare, gonion and vertical T line